Page 63 - Webster Service Manual

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INSTALLATION DATA
V Series pumps are shipped from the factory set for
two-pipe operation. They are not recommended for use
in one-pipe systems (except series V00, see Note 1).
IMPORTANT:
Do not loosen or try to tighten any pump
plugs not to be used in the installation. NON-HARDEN-
ING OIL PIPE DOPE IS RECOMMENDED for use on
the threads of all fittings. Teflon tapes or paste must be
used with care to prevent depositing tape pieces or
fibers into critical internal areas of the pump. Reduced
torques must be used with teflon materials to avoid
thread or casting damage. EVIDENCE OF TEFLON
MATERIAL IN INTERNAL AREAS OF THE FUEL-UNIT
WILL BE CAUSE TO VOID WARRANTY.
Installation
1.
Connect inlet line to preferred INLET PORT. Use of
inlet in cover is recommended for minimum inlet vacu-
um loss. Connect nozzle line to nozzle port.
2.
Connect return line to preferred RETURN POR T
except on V00 pumps. Use of bottom return is recom-
mended to minimize back pressure. Top return port not
recommended for oil heavier than #2.
3.
Plug all unused ports securely.
4.
Start burner. Two-stage and most one-stage pumps
will self-vent. V00 with shut-off valve in nozzle line may
have to be vented manually by loosening GAGE PORT
plug. Tighten plug securely when oil flows clear.
Installation Notes:
Fuel unit inlet pressures should not exceed 3 psig in
order to comply with National Fire Protection
Association's Bulletin 31.”
To assure maximum performance, INLET VACUUM,
measured at unused INLET PORT, should not exceed
10”
Hg on single-stage pumps or 15” Hg on two-stage
pumps.
NOTE:
Max Recommended Firing Rates apply to 10”
Hg for single-stage units and 15” Hg for two-stage units.